Home / 2,776.28-4,165.26-1,215.55

Finding the Fourth Proportional to 2,776.28, 4,165.26 and 1,215.55

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Solution

The fourth proportional to 2,776.28, 4,165.26 and 1,215.55 is: 1,823.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.28 : 4,165.26 = 1,215.55 : x
  2. Step 2: Convert to fraction form
    2,776.28/4,165.26 = 1,215.55/x
  3. Step 3: Cross multiply
    2,776.28x = 4,165.26 × 1,215.55
  4. Step 4: Simplify right side
    2,776.28x = 5,063,081.79
  5. Step 5: Solve for x
    x = 5,063,081.79/2,776.28
  6. Step 6: Final answer
    x = 1,823.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.